Adsorption behavior and mechanism of Cr(VI) by modified biochar derived from Enteromorpha prolifera

Ecotoxicology and Environmental Safety
You-Yuan ChenDan Wu

Abstract

Biochar that was derived from Enteromorpha prolifera and magnetically modified (BCF600) was evaluated for its physicochemical properties and Cr(VI) adsorption behavior and mechanism. The results showed that the modified biochar was less porous on surface and loaded with γ-Fe2O3 particles. BCF600 exhibited a maximum adsorption capacity for Cr(VI), which acquired from the Langmuir model of 88.17 mg g-1 and a removal efficiency of 97.71%, for 100 mg L-1 of Cr(VI). The adsorption of Cr(VI) by BCF600 decreased with increasing pH and background ion intensity. Based on the FTIR results, the change in the -OH groups on the surface after adsorption confirmed that electrostatic interaction was likely the preponderant mechanism. In addition, the BCF600 could be easily separated using a magnet and displayed high recyclability. Therefore, this magnetic biochar derived from Enteromorpha prolifera has the potential to serve as a highly efficient adsorbent for water pollution control.

Citations

Aug 25, 2019·International Journal of Environmental Research and Public Health·Xue-Li ChenLong Chen
Oct 30, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Min SangHuichao Sun
Apr 5, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xiaoling HuJie Xing
Dec 10, 2020·Scientific Reports·Meina LiangLin Lu
Dec 10, 2020·The Science of the Total Environment·Jingjing ZhaoCristina Palet
Apr 25, 2020·The Science of the Total Environment·Benjuan LiuZubin Xie
Aug 28, 2020·Ecotoxicology and Environmental Safety·Jing-Fang CaiFei-Hai Yu
Dec 7, 2021·The Science of the Total Environment·Anushka Upamali RajapakshaYong Sik Ok

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